Effect of Shear Rate on Characteristics, Performance and Morphology of Polysulfone Blend Membranes

• Main Authors: Asmadi, Ali, R. M., Yunus, Mohamad, Awang, Anwar, Johari, Ramli, Mat
• Format: Article
• Language: English
• Published: scientific.net 2015
• Subjects: TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/9437/1/Effect%20of%20Shear%20Rate%20on%20Characteristics%2C%20Performance%20and%20Morphology%20of%20Polysulfone%20Blend%20Membranes.pdf; http://umpir.ump.edu.my/id/eprint/9437/; http://www.scientific.net/AMM.699.305

Rheological factor such as shear rate during membrane fabrication process has an effect on properties, structures and performance of membranes. Flat sheet asymmetric PSf/CAP blend membranes were prepared using an automatic casting machine at different shear rates in the range of 42.0 to 201.0 s-1. Results showed that increasing the shear rate from 42.0 to105 s-1 has increased the molecular orientation and thickness which then reduces the water content, porosity and pure water flux of PSf/CAP blend membranes. However, further increasing the shear rate beyond 105 s-1has resulted in an increase in the water content of PSf/CAP blend membranes.